Process of applying cement patches



Nov. 2o, 1923. 1,475,029

` L, RISK PROCESS OF APPLNG' CEMENT PATCHES Filed July 2'?. 1922 Fia-6 l'NvE/vofa- LoRE/v RISK.

ATTok/YE Ys- Patented Nov. 20, i923.

,UNTE@ STATES LOREN RISK, OF MINNEAPOLIS, MINNESOTA.

rnocnss or APPLYING CEMENT raisonne] Application led July 27,

T o all whom t 'may concern f Be it known that I, Loan-N RISK, acitizen of the UnitedStates, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Processes of Applying Cement Patches, of which the following is a specification.

My invention relates to the process of applying cement patches, and an object is to provide for repairing articles having holes or defective Places without the employment of any vulcanizing operation. While intended more particularly for repairing rubber inner tubes of pneumatic tires, my inventio-n may be used for repairing` otherl flexible material such as canvas and leather. Heretofore, it has been customary to apply cement patches to rubber without the employment of any preliminary heating. It requires a considerable length of time for the cement to dry when the rep-air is made in such manner and the patch does not adhere as firmly as desirable. I have found that when the surface to 'be repaired is heated just prior to the application of the cement and the patch, much less time is required before the article is ready for use. In fact, with theuse of my invention, the article is ready for use as soon as the patch is applied and the patch adheres much more firmly than when applied in the old way.

The full objects and advantages of my invention will appear in connection wi-th the detailed description, and the 'novel features embodied in my inventive idea will be par ticularly pointed out in the claims.

In the accompanying drawings which illustrate the application of my invention, Fig. 1 is a view of the device partly in vertical section and partly in side elevation. Fig. 2 is a view in side elevation of the portion of the device which is shown in section in Fig. 1. Fig. 3 is a view in transverse section on the line 3-3 of Fig. 2. Fig. 4 is a plan view showing a surface to which a patch is to be app-lied. Fig. 5 isa plan view of a patch. Fig.'6 is a view showing the patch applied. Fig. 7 is a bottom plan view of the rear end of the tool handle.

Referring to the construction shown in the drawings, the numeral 10 designates the body portion of a tool which may be used in carrying out my process, this portion being in the form of a receptacle having perforations 12 in its walls, near the bottom thereof.

1922. Serial N0. 577,877.

llhe cover 14 is hinged to the rear of the body portion 10 b f a pintle 16. The cover 14 has bottom member 'with upstanding walls around its margin, and the sidewalls are provided with horizontal flanges I8 which limit the extent to which the cover can be pushed into tlie'receptacle 10 as will be apparent from Fig.4 3. Secured toi the rear of the receptacle is a tank 20, the rear end of which is received in an opening in a handle 22. The rear end of the handle vis 'cut on an incline and provided with a scraper' or buifer 24. Y

In the use of my invention, the cover 14: is placed in open position as shown in dotted lines Vin Fig. l and solid fuel is placed inthe receptacle 10. rIhis solid fuel may be in the form of fuses such as disclosed in my prior Fatent No. 1,209,206 dated Dec. 19, 1916. As shown in Fig. l, two of these fuses indicated by the character F may be employed. rIhese fuses after being placed in the receptacle are ignited and the cover is closed, the smoke and gases escaping from the perforations 12. The fuses continue to glow and keepthe tool hot for a considerable period of time. The surface to be repaired is cleaned and roughened by the use of the buffer 24 and is then washed over with suitable material such as gasoline or benzine. The surface thus prepared is heated by the use of the tool and then a specially prepared cement is applied to the hot surface of the material which is being repaired and is also preferably applied to the heated surface of the patch. In the drawings, S designates the surface of the artic-le to be repaired, the defect in-this case being` shown as a hole H. The cement is indicated at C and the patch by the character P. The cement when spread on the heated surface dries almost immediately to a sticky or tacky condition, and the patch is then applied over the place to be repaired. A piece of cloth may be placed over the patch and briskly rub-bed with the heated tool.Y The repair thus made is alA` lowed to cool and the article is ready for immediate use. The patch, previousto the application of the cement thereto, may be heated by placing Vit in the depression of the cover or if of large size may be heated by rubbing the hot tool over the patch. My inven-v tion 1s of special advantage in cold or damp weather. In the winter time, the material to'fbe patched is cold,stifl-l and frosty, and

requires a long time to dry. By heating the'V surface tobe repaired with the 'heating tool,

this surface Will he dry, Warm. and pliable y use of the heated tool, the surface to he repaired will he dry and will take the patch at once so that it vbecomes firmly att-ached. The

cover may be employed as a pan for heating certain kinds of cement. By the use of heat, the pores of the material to he repaired are expanded and the cement is thinned. y'lhe result is that the cement penetrates the material more readily, sets immediately and causes a more perfect adhesion of the patch.

I claim: Y v

1. A process for applying cement patches which consists in heating the surface to he repaired, applying cement te the heated surface, and pressing the patch upon the cement-coated surface.

2. A process for applying cement patches which consists in heatingvthe surface to be repaired, applying cement to the heated surface, heating a patch, and pressing the patch upon the cement-coated surface.

' 3. ik process fol' applying' cement patches which consists in heating the surface to he repaired, applying cement to the heated surface, heating` a patch, applying` cement to the heated patch, and pressingthe patch upon the cement-coated surface. n

l. A process for applyingy cement patches which consists in heating` the surface to he repaired, applying;` cement to the heated sur-- face, and pressing' a patch upon the cementcoated surface `while applyingheat.

5. A process for applying'l cement patches which consists in heating the surface to bc repaired, applying cement -to the heated surface, placinga patch upon the cement-coated 4 surface, y.placing a pieceof cloth over the patch, and pressing th-e patch upon the cement-coated surface While applyingheat.

In .testimony whereof I hereunto affix my signature.

LOREN RISK. 

